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Springer theses probing the early universe with the cmb scalar vector and tensor bispectrum


Foto: Springer theses probing the early universe with the cmb scalar vector and tensor bispectrum
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Uiterlijk 28 januari in huis


Inhoudsopgave:

Omschrijving:

The non-Gaussianity in the primordial density fluctuations is a key feature to clarify the early Universe and it has been probed with the Cosmic Microwave Background (CMB) bispectrum.

The non-Gaussianity in the primordial density fluctuations is a key feature to clarify the early Universe and it has been probed with the Cosmic Microwave Background (CMB) bispectrum. In recent years, we have treated the novel-type CMB bispectra, which originate from the vector- and tensor-mode perturbations and include the violation of the rotational or parity invariance.

On the basis of our current works, this thesis provides the general formalism for the CMB bispectrum sourced by the non-Gaussianity in the scalar, vector and tensor-mode perturbations. Applying this formalism, we calculate the CMB bispectra from the two scalars and a graviton correlation and primordial magnetic fields, and then outline new constraints on these magnitudes. Furthermore, this formalism can be easily extended to the cases where the rotational or parity invariance is broken. We also compute the CMB bispectra from the scalar-mode non-Gaussianities with a preferred direction and the tensor-mode non-Gaussianities induced by the parity-violating Weyl cubic terms. Here, we show that these bispectra include unique signals, which any symmetry-invariant models can never produce.





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Product specificaties:

Oorspronkelijke releasedatum: 07 augustus 2015

Aantal pagina's: 180

Hoofdauteur: Maresuke Shiraishi

Hoofduitgeverij: Springer Verlag, Japan

Editie: Softcover reprint of the original 1st ed. 2013

Product breedte: 155 mm

Product lengte: 235 mm

Verpakking breedte: 155 mm

Verpakking hoogte: 235 mm

Verpakking lengte: 235 mm

Verpakkingsgewicht: 3051 g

EAN: 9784431547167